Organosilicon compounds



United States Patent This application relates to novel organosilicon compounds that are useful as sizing agents, elastomeric materials, etc.

The compounds of thisv invention'include both silanes and siloxanes. The silanes of this invention can be described as being compounds of the formula where n is an integer of 2 through 3, and Q is selected from the group consisting of lower alkyl radicals and hydrogen atoms, R is a divalent radical, free of aliphatic unsaturation, selected from the group consisting of hydrocarbon radicals and radicals containing carbon atoms, hydrogen atoms, and oxygen atoms in an ether linkage,

x is an integer of 0 to 1, and R is selected from the group consisting of monovalent hydrocarbon radicals, hydrolyzable groups, and the hydroxyl group.

Q can be hydrogen or any lower alkyl radical such as the methyl, ethyl, isopropyl, n-pentyl, or isohexyl radical. R can be any divalent radical, as defined above, such as methylene, ethylene, propylene, decylene, octadecylene, 2,5-octylene, i

R can be any monovalent hydrocarbon radical; e.g. alkyl groups such as methyl, ethyl, isopropyl, n-hexyl, Z-ethylhexyl and octadecyl; cycloaliphatic groups such as cyclohexyl and cyclopentenyl; unsaturated groups such as vinyl, ethynyl, allyl, 4-hexenyl, butadienyl, or 6-decenyl; and aromatic-containing groups such as phenyl, tolyl, benzyl, and naphthyl, R can also be the hydroxyl group or any hydrolyzable groups known to the art; e.g., lower or naphthyl.

3,249,586 Patented May -3, 1 966 halogen groups: F, Cl, Br, or I; or the isocyanate group. p The siloxanes of this invention are siloxane polymers,

containing at least one unit of the formula where n is an integer of 2 through 3, Q is selected from "the group consisting of lower alkyl radicals and hydrogen atoms, R is a divalent radical free of aliphatic unsaturation and selected from the group consisting of hydrocarbon radicals and radicals containing carbon atoms, hydrogen atoms, and oxygen atoms in an ether linkage, x is an integer of 0 to 1, R is selected from the group consisting of monovalent hydrocarbon radicals, hydrolyzable groups, and the hydroxyl group,- and m is an integer with a value of 0 through 2; any other units present being of the formula Z SiO where Z is selected from the group consisting of monovalent hydrocarbon and halohydrocarbon radicals, and a is an integer of 1 through 3.

Examples of Q, R,- and R are given above.

Z can be any monovalent hydrocarbon radical; e.g., alkyl radicals such as methyl, ethyl, isopropyl, n-hexyl, 2-ethylhexyl, and octadecyl; unsaturated radicals such as vinyl, ethynyl, allyl, butadienyl, or S-hexeriyl; cycloaliphatic radicals such as cyclohexyl or cyclopentenyl; and aromatic containing radicals such as phenyl, tolyl, benzyl,

Zcan also be any monovalent halohydrocarbon radical; e.g., haloalkyl such as chloromethyl, 3,3,3 trifluoropropyl, B-(perfiuoroheptyDethyl, or 4-bromohexyl; unsaturated radicals such as 3-chloroallyl or 4,4-difluorobutadienyl; cyclohaloaliphatic radicals such as chlorocyclohexyl or iodocyclopentenyl; and aromatic-containing radicals such as fluorophenyl, a,a,a-trifluorotolyl, or chlorobenzyl.

The silanes of this invention can be made by reacting Q Dn x H=CH2 with HSiR' in the presence of chloroplatinic acid, with alkoxy groups such as methoxy, ethoxy, isopropoxy,

butoxy, or isohexoxy; acyloxy groups such as formate, acetate, propionate or butyrate; ketoxime groups such as a suitable solvent (e.g. xylene) and avinyl polymerization inhibitor such as hydroquinone.

In other words, the reaction is:

, When x is zero, a -CH CH group connects the nitrogen and the silicon atom, i.e.:

chloroplatlnlc R can also represent a divalent hydrocarbon, hydro- 3 carbon ether, or hydrocarbonoxy radical as is shown in the examples that follows:

Qoormo ans N-OCHiCHiSiR:

Elevated temperature accelerates the reaction, but temperature, pressure, and proportion of reactants all are not critical.

The siloxanes of this invention can be made by hydrolyzing and condensing silanes of this invention which con.- tain hydrolyzable R groups. This hydrolysis reaction is.

well-known to the art.

A pure form of silane can be hydrolyzed to form siloxane homopolymers, or mixtures of silanes can be hydrolyzed to form siloxane copolymers. More than one species of silane of this invention can be cohydrolyzed, if desired, as can also other known silanes of the formula Z SiR' where Z and a are defined above, and R'is a hydrolyzable group, as defined above.

The siloxanes of this invention can also :be made by reacting .l oormo QrrsNRoH=oH= with a siloxane which contains silicon-bonded hydrogen. This type of reaction is illustrated by Examples 2 through 5.

The silanes of this invention are suitable as sizing agents and surfactants, while the siloxanes of this invention are useful thermoplastic, ela-stomeric, and resinous materials.

The following examples are illustrative only, and should not be construed as limiting the invention, which is properly delineated in the appended claims.

Example 1 Equimolar amounts of (CH )HSi(OC H and ll GHQ-0 No H=C H. (N-vinyl-Z-pyrolidone) CHaC Hz were heated at 101 to 126 C. in the presence of chloroplatinic acid and hydroquinone.

Distillation afforded a 17.0% yield of CH2C NCH2CH2S1(CH3) (002m):

CHrCHz which has a boiling point of 130 C. at 0. 6 mm. pressure, anda room temperature refractive index of 1.4538.

. Hydrolysis of this product yielded a viscous, brown oil which was a homopolymer containing CHzC 1 units.

4 Example 2 To 366.5 g. of N-vinyl-2-pyrrolidone was added 201.5

g. of tetramethyldisiloxane, 4 g. of hydroquinone, 0.014

g. of platinum (as H PtCle), and 431 g. of xylene.

This was heated at 92-132" C. for 109 hours. 20 g. of

r NCHiCH2Sl(CHa)2)O 2 were recovered. The product has a boiling point of C. at 0.8 mm. pressure, and a refractive index of 1.4640 at room temperature.

Example 3 To 203.6 g. of N-vinyl-Z-pyrrolido-ne was added 385.9 g. of phenyltetramethyldisiloxane, 0.0084 g. of platinum (as H PtCI and 2 g. of hydroquinone.

The mixture was heated at 150 to 210 C. for ten hours to yield 134 g. of

/N 0112cmsuornnosuomnQ The product has a boiling point of 141 C. at 0.44 mm. pressure and a refractive index at room temperature of 1.4980.

Example 4 NCHgCHgSKC H910 Si (O H3) 2C 181131 The product has a boiling point of 244.5 at: 0.4 mm. pressure and a refractive index at room temperature of 1.4615.

Example 5 When N-vinyl-2-pyrrolidone is'reacted with an, (3H (CH S1O Silo) S10 Si(CH )a H 10 (B11 40 Q a siloxane of the formula W W (onmsio s10 s io sncH (tJHu 1o CH3'40] Example 6 is formed.

When the following pyrrolidones are reacted with the following silanes in the presence of platinum and hydroquinone, the following products are formed.

Product of Silane s) Example Copolymer Units c CFaCH2CH2S|i OC2 5)2+(C s ioolHs CH3 (|]Hg OH I +CF3OH OH SIiO 1c1 s s 0H1 on, ("DE 01101 That which is claimed is: 5. 1. A compound of the formula F 011,0 mo H1O No Hlornsuo H920 Sl(CH )2C1sH37 qoonno Q,H(|?N(R);0H2CH2S1R3 l where n is an integer of 2 through 3, Q is selected from the group consisting of lower alkyl radicals and hydrogen atoms, Ris a divalent radical free of aliphatic unsaturation and selected from the group consisting of hydrocarbon radicals and radicals containing carbon atoms, hydrogen atoms, and oxygen atoms in an ether linkage, x is an integer of 0 to 1, and R is selected from the group consisting of monovalent hydrocarbon radicals, hydrolyzable groups, and the hydroxyl group.

3. A siloxane polymer containing at least one unit of the formula carbon radicals and radicals containing carbon atoms, 5

hydrogen atoms, and oxygen atoms in an ether linkage, x is an integer of 0 to l, R is selected from the group consisting of monovalent hydrocarbon radicals, hydrolyzable groups, and the hydroxyl group, and m is an integer with a value of 0 through 2; any other units 55 present being of the formula ZgSiO Where Z is selected from the group consisting of monovalent hydrocarbon and halohydrocarbon radicals, and a is an integer of 1 throught'a.

6. A homopolymer containing units where n is an integer of 2 through 3, Q is selected from the group consisting of lower alkyl radicals and hydrogen atoms, R is a divalent radical free of aliphatic unsaturation and selected from the group consisting of hydrocarbon radicals and radicals containing carbon atoms, hydrogen atoms, and oxygen atoms in an ether linkage, x is an integer of 0 to 1, R is selected from the group consisting of monovalent hydrocarbon radicals, hydrolyzable groups, and the hydroxyl group, and m is an integer with a value of 0 through 2.

8. A homopolymer containing C 11:0 The H1O NC H2O HzSi(O H3) 0- units.

References Cited by the Examiner UNITED STATES PATENTS 2,845,435 7/1958 Frisch et a1 26046.5

2,881,184 4/1959 -Pike 26046.5

2,902,468 9/1959 Pianu 26046.5

FOREIGN PATENTS 1,115,927 10/1961 Germany;

LEON J. BERCOVITZ, Primary Examiner.

F. McKELVEY, Assistant Examiner. 

1. A COMPOUND OF THE FORMULA
 3. A SILOZANE POLYMER CONTAINING AT LEAST ONE UNIT OF THE FORMULA 